Create a flat vector, illustrative-style wordmark logo design for a library name

Create a flat vector, illustrative-style wordmark logo design for a library named 'Halifax Central Library', where 'Halifax' is in bold uppercase with 'Central Library' in a lighter font underneath. The 'H' in 'Halifax' can be stylized to resemble an open book, symbolizing knowledge and education. Use a calming blue and green color palette to evoke trust and growth against a white background. Do not show any realistic photo detail shading.